Alsace



S. PFEIFFER.

HAND PLANE.

APPLICATION FILED JUNE 28, 1920.

Patented May 30, 1922.

2 SHEETS-SHEET 1.

Wi $2 for? S. PFEIFFER.

HAND PLANE.

APPLICATION FILED JUNE 28,1920.

1,417,857. t d May 30, 1922.

2 SHEETS-SHEET 2.'

UNITED STATES @lFt'liat'l.

STEPHAN PFEIFFER, OF ST. PILT. NEUBA'U STATION, RIBEAUVILLE CIRCLE,UPPER ALSACE, FRANCE, ASSIGNOR '10 CHARLES KOLLER AND CHARLES EREYSZ,BOTH 0F STRASBURG, ALSACE, FRANCE.

HAND PLANE.

Application filed June 28. 1920.

Specification of Letters Patent.

Patented May 30, 1922.

Serial No. 392,493.

(GRANTED UNDER THE PROVISIONS 9F THE ACT OF MARCH 3, 1921, 41 STAT. L,1313.)

To all 11. 5am it may concern:

Be it known that I. STEPHAN PFEEFFER. residing at St. .Pilt. NeubauStation, Ribeauville Circle, Upper Alsace, France, have invented certainnew and useful .lmprovcments iii or Relating;- to Hand Planes (for whichI: have tiled applications in Germany. Jan. 22. L9H), No. 327.616; lrancc l eb. 2'7. 1919. No. 522.925; Great Britain, (lot. 30. i919 No.134,547; Belgium. Sept. 8. 1919; Luxemburg. Sept. 9. 1919, No. 11,497;Switzerland. Sept. 9, 1919, No. ayesc; ltaly. Sept. 9. 1919, No.187/513; Tunis, Sept. 12-3. 1919, No. 1,627; Spain, Sept. 11, i919, No.70.8%8; Denmark. Sept. 16, 19l9, No. 26.791; Morocco, Sept. 16, i919,No. 12:3; Norway. Sept. 20. 1919; Austria, Sept. 25, 1919: Hungary, Oct.25. i919; Portugal, Sept. 25. 191.9, No. [0.998; Sweden. Sept. 27,1,919. No. 50,311; Japan, Sept. 21, 1920. No. 37,203). oi which thefollowi n5; is a specification.

There are already planes in existence in which the plane iron. slidingover a rigid metal plate lodged in the stock and clamped by means of atightening handle. is displaced in the direction of its longitudinal.axis by means of a screw. But these planes have the defect that therigid plate "forming a guide. together with the screw that displaces theplane iron in the direction of its longitudinal axis. and the tighteninghandle. take up a great deal too much room in the stock and necessitateinconvenient auxiliary parts. They also present the disadvantage thatthe metal plate or guide. and also the other members of the plain}.cannot be arranged so deeply in the stock. and finally that the mountingof the tighteninp handle and of the screw that displaces the ironlongitudinally in the plane is not anilii-iently strong and rigid. bothas regards the relative position of those members and as regards theirposition with respect to the guide plate and to the iron. Finallv theacting part of the tightening handle is too far from the cutting); edgeof the iron and the tightening; is etliected by means of intermediatemembers located in the path of the shavings and hindering them frompassing out.

Planeso'l this type are also often provided with a device enabling theplane iron to be displaced laterally. This device is located. inconsequence of the lack of room already mentioned. too far from thecutting I l e o; the iron. and. can only act on the inn tl'u'ough themedium of intermediate members. which prevents an accurate transverseadjustment oi the plane iron from being obtained.

The presentinvention relates to a plane which obviates thediszulvantages pointed out above. thanks to the arrangement of a plateforming a guide. which. in addition to an upper wing and a lower wingintended for the purpose of sumiorting the screw that displaces the.plane iron longitiulinally. also possesses lateral wings tor themounting of the tightening lever of the iron. and which moreover makesit possible to locate the device that eiiects the transverse (1'lacement oi the plane iron deeply in the stool; and below the axis ol"rotation of the iron. and to arrange it in such a way as to act directlyon the iron. It follows from this that the force that effects thetransverse displacement ol the iron has its point of application as nearas possible to the cutting edge thereby making it possible to adjust thetransverse position. oi the iron with a slight effort.

In the accompanying drawings one constructional form of thesubject-matter of the invention is illustrated by way of example.

Figure 1 is a longitudinal sect-ion of the plane.

Figure 2 is a plan of the plane. from which the plane irons have beenremoved.

Figure 3 shows the device for the lateral displacement of the iron.

in these figures. l and 2 are the plane iron and the break iron. whichare both (lisplaccd by the nut 3 and the screw 4. The nut 3 providedwith a nipple 5 which enters a suitable hole in the plane iron orblade 1. The adjustment of the relative positions of the cutting ironand the break iron is etl'ccted by means of a screw 6. The irons l and 2are pressed against one another and against the guide plate 7 by meansof a hand, lever S which can be turned down and which pivots for thispurpose about the two trunnions 9 located in the wings 10 ot the guideplate 7. The lever 8 is-provided 1 two leier arms and is formed in suchmay that its shorter arm ll. (Figure presses the irons l and 2 againstthe guide plate *5, when it is in the position shown in Figure 1. Bybringing the longer arm of the lever into the position shown in dottedlines the irons are loosened and they can then be withdrawn vfrom theplane. Since the tightening handle or lever is itself mounted on theguide plate it forms with the cutting iron and the top iron and theguide a virtually integral unit which will strongly resist the stress sto which it is subjected by the work to be done..-

in order that the upper end of the adjust ing screw l may be quite freeand may be able to take any actuating member. such as a wing nut, theguide is provided with two wings l2. 'Ihesewings serve as supports forthe two extremities ol': the adjusting screw l so that it may be heldlirm in order to prevent any displacement thereof and so that he nut maymove without jamming during the adjustment. The fixing o l? the guide onto the plane stock 13 may be el tected for example by means oi? thescrews ll (Figure 2). In consequence oi? the arrangement of the wings.12 the upper extrem :ity oi the screw l passes freely to the outsideand. since there is no 01 tacle in the path Oil the said. extremity itis possible to mount thereon an actuating member provided with a longlever arm, which in the present case will take the form oi a wing nut15, thereby enabling the plane iron to be displaced without the use oiany auxiliary tool and without first having to turn down the lever 8.Thanks to this arrangement it is possible to locate the guide ratherdeeply in the plane stock and the guide moreover does not take up muchroom.

Furthermore, it is possible to place a nut 17 with a lock nut 18 on thepart 16 of the screw 4 above the wing 12 of the guide 7. By means ofthese nuts it will be possible to take up at once any play that might beproduced in the mounting of the screw The lock nut prevents the nut 17from working loose and it is this nut 17 which really effects theadjustment.

In order to be able to displace and regulate accurately the transverseposition oi the plane iron 1 and of the top iron 2 a bolt 19 (Figures 1,2 and is arranged perpendicularly to the longitudinal axis of the planein a special cavity in the plane stock below the axis of rotation 5 olthe plane iron, this bolt being screw-threaded at 20 on the part of itslength that engages in a nut 21. fixed. in any suitable manner into thecheck of the plane stock. The bolt l9 is turned down to a smallerdiameter along a part corresponding to the width of the iron 1, so as to'l'orn'i two shoulders 22 between which the irons are placed and guided.It will therefore be seen that by rotating the bolt 19 by means thebutterfly nut in one direction or the other there will be immediatetransverse displacement of the bolt and also oi the plane irons carriedalong by one or the other of the collars 22, the transverse position ofthe iron thus admitting oi? being regulated easily conveniently and withthe utmost exactness, for the force acting is applied near the cuttingedge oi the blade.

The means described consequently form a device which is ol the simplestand most reliable character and which enables the irons to be displacedwithout the help of any auxiliary tool and without first having toloosen them, and furthermore makes it possible to take up any play ofthe adjusting screw which might be produced and furthermore to eliect anaccurate transverse adjustment of the iron. It will also be seen thatthe extreme simplicity of the members of the plane answers perfectlyl'or maiuiiiuzture in quantities, thereby enabling this plane to beproduced at a moderate cost price.

What I claim and desire to secure by Letters Patent of the United Statesis l. A plane in which the iron sliding over a rigid metal guide isclamped in position by means of a lever and can receive displacements inthe direction of its longitudinal axis. the plane being characterized bythe fact that besides the upper and lower wings at right angles, whichserve as a support tor the screw that displaces the bladelongitudinally, the guide is provided with lateral \i'll or cheeks forthe mounting of the tightening lever, while umlerneath the nipple of thenut which serves to displace the iron loi'igitudinally and which alsoserves as a point of articulation for the trainsvcrse dis placement otthe iron a transverse bolt is mounted in such a way as to be able torotate and at the same time to move t'ans- 'versely to the longitudinalaxis oi the plane, and this bolt. in moving, acts directly on the ironand displaces it transversely.

2. in the plane specified in claim 1. the arrangement of shouldersturned down on the belt which serves for the transverse adjustment andwhich moves in the plane stock by screwing the said shoulders acting,when the said bolt is rotated on the iron, which they embrace.

3. A constructional form of the plane specified in claims 1 andcharacterized by the arrangement of a nut on the narrowed part oi the sc2w that produces the longitudinal displacement oi the iron. locatedabove the upper wing of the guide this nut making it possible to take upthe play that might be produced by the movement of the said screw, andbeing capped by a loci: nut which prevents it from working loose.

STEPHAN PFEIFFER.

